CVE-2026-8947
7.3 HIGHUse-after-free in the DOM: Bindings (WebIDL) component
Published: 2026-05-19 · Last updated: 2026-05-19
Severity and scoring
- CVSS
- 7.3 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- CWE
- CWE-416
Affected products
| Vendor | Product |
|---|---|
| mozilla | firefox, thunderbird |
Description
Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-8947
- [Other]https://bugzilla.mozilla.org/show_bug.cgi?id=2038439
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-46/
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-47/
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-48/
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-50/
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-51/
Related CVEs
Same vendor
- CVE-2026-12330 — Incorrect boundary conditions in the Internationalization component (5.4 MEDIUM)
- CVE-2026-12329 — Memory safety bug fixed in Thunderbird ESR 140.12 (5.3 MEDIUM)
- CVE-2026-12328 — Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151 (8.1 HIGH)
- CVE-2026-12323 — Spoofing issue in the DOM: Core & HTML component (5.4 MEDIUM)
- CVE-2026-12322 — Clickjacking issue in the Widget: Gtk component (5.4 MEDIUM)
Same CWE
- CVE-2026-10640 — Zephyr's IPv6 Neighbor Discovery send paths (net_ipv6_send_na, net_ipv6_send_ns, net_ipv6_send_rs in subsys/net/ip/ipv6_nbr.c) updated th... (4.2 MEDIUM)
- CVE-2026-10639 — In Zephyr's native IPv4 stack, icmpv4_handle_echo_request() in subsys/net/ip/icmpv4.c builds an echo-reply packet (reply), hands it to ne... (4.8 MEDIUM)
- CVE-2026-10638 — subsys/net/ip/icmpv6.c reads the network interface from a net_pkt after that packet has been handed to net_try_send_data() (5.9 MEDIUM)
- CVE-2026-10637 — subsys/net/ip/ipv6_mld.c:mld_send() read the packet interface via net_pkt_iface(pkt) after net_send_data(pkt) returned successfully (5.9 MEDIUM)
- CVE-2026-10636 — In Zephyr's IPv4 IGMP implementation, igmp_send() in subsys/net/ip/igmp.c read the network interface back out of the packet via net_pkt_i... (3.7 LOW)